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  2. Accuracy and precision - Wikipedia

    en.wikipedia.org/wiki/Accuracy_and_precision

    Accuracy is also used as a statistical measure of how well a binary classification test correctly identifies or excludes a condition. That is, the accuracy is the proportion of correct predictions (both true positives and true negatives) among the total number of cases examined. [10]

  3. Precision and recall - Wikipedia

    en.wikipedia.org/wiki/Precision_and_recall

    In a classification task, the precision for a class is the number of true positives (i.e. the number of items correctly labelled as belonging to the positive class) divided by the total number of elements labelled as belonging to the positive class (i.e. the sum of true positives and false positives, which are items incorrectly labelled as belonging to the class).

  4. File:High accuracy Low precision.svg - Wikipedia

    en.wikipedia.org/wiki/File:High_accuracy_Low...

    Representation of high accuracy and low precision. Date: 30 November 2006: Source: DarkEvil, based on Accuracy and precision-highaccuracylowprecision.png, which is free. Author: DarkEvil: Permission (Reusing this file)

  5. Evaluation of binary classifiers - Wikipedia

    en.wikipedia.org/wiki/Evaluation_of_binary...

    The measure precision at k, for example, is a measure of precision looking only at the top ten (k=10) search results. More sophisticated metrics, such as discounted cumulative gain , take into account each individual ranking, and are more commonly used where this is important.

  6. Micrometer (device) - Wikipedia

    en.wikipedia.org/wiki/Micrometer_(device)

    Henry Maudslay built a bench micrometer in the early 19th century that was jocularly nicknamed "the Lord Chancellor" among his staff because it was the final judge on measurement accuracy and precision in the firm's work. [5] In 1844, details of Whitworth's workshop micrometer were published. [6]

  7. Evaluation measures (information retrieval) - Wikipedia

    en.wikipedia.org/wiki/Evaluation_measures...

    Precision takes all retrieved documents into account. It can also be evaluated considering only the topmost results returned by the system using Precision@k. Note that the meaning and usage of "precision" in the field of information retrieval differs from the definition of accuracy and precision within other branches of science and statistics.

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    These are the Amazon deals our editors are adding to our carts this week: Rare sales and gift ideas for less

  9. Category:Accuracy and precision - Wikipedia

    en.wikipedia.org/.../Category:Accuracy_and_precision

    Pages in category "Accuracy and precision" The following 12 pages are in this category, out of 12 total. This list may not reflect recent changes. ...